Neural and mechanical influences on the initation of the squat jump

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dc.contributor.advisor Humphries, Brendan en_US Hasson, Christopher J. en_US 2011-06-03T19:39:59Z 2011-06-03T19:39:59Z 2003 en_US 2003
dc.identifier LD2489.Z78 2003 .H37 en_US
dc.description.abstract The purpose of this research was to examine the effects of a premovement silent period (PSP), and an involuntary small amplitude countermovement (CM) on the maximal height of the squat jump (SJ). Fifteen elite male volleyball players (20.6 ± 1.6 yrs) and thirteen untrained males (20.2 ± 1.7 yrs) performed ten maximal effort SJs from identical starting positions. The electromyographic activity of the vastus lateralis and biceps femoris was measured in conjunction with the vertical ground reaction force, and the vertical displacement measured by a cable-extension transducer. The presence of a PSP or small amplitude CM did not increase maximal SJ height significantly (p > 0.05). These findings indicate that in the SJ, facilitation effects of the PSP and small amplitude CM are minimal. This is important to past and future studies utilizing the SJ, as it is often difficult for individuals to perform SJs with no detectable CM.
dc.description.sponsorship School of Physical Education
dc.format.extent xi, 66 leaves : ill. ; 28 cm. en_US
dc.source Virtual Press en_US
dc.subject.lcsh Jumping -- Physiological aspects. en_US
dc.subject.lcsh Exercise -- Physiological aspects. en_US
dc.title Neural and mechanical influences on the initation of the squat jump en_US Thesis (M.S.)
dc.identifier.cardcat-url en_US

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  • Master's Theses [5510]
    Master's theses submitted to the Graduate School by Ball State University master's degree candidates in partial fulfillment of degree requirements.

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